public class ZooManager  {
    String name;
    int age;
    public  void feed(Animanl a )
    {
        a.eat();
    }

    public  void letItShow(Actor a )
    {
        a.play();
        if(a instanceof Parrot)
        {
            Parrot parrot= (Parrot)a;
            parrot.say();
        }
    }

    public ZooManager(String name, int age) {
        this.name = name;
        this.age = age;
    }

    public ZooManager() {
    }
}
